MalwareFinancial ServicesFinanceRansomwareData ExfiltratedData EncryptedIdentity (basic)Financial accountLowContained

The Mather Group LLC

bd_2a7169609785dc40 · schema v1 · pii pii-v1

Severity

Low

Discovered

Jun 21, 2023

Filed

Sep 14, 2023

To disclose

12 weeks

Affected

Not disclosed

Linked

6 filings

Confidence

68%

Full breach record for The Mather Group LLC →

The Mather Group LLC disclosed a June 21, 2023 malware incident where unauthorized access led to data encryption and potential exfiltration. The breach impacted client names and financial account numbers. The company engaged forensic experts, notified the FBI, and offered 24 months of credit monitoring. No specific victim count was provided.

J jump to incidentP pin to compareR raw source

Vermont clock✗ VT AG >45 bday12 weeks discovery → filing

⚠ unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Incident timeline

discovery → filing · 12 weeks / 85 days

Jun 21, 2023

Discovered

Sep 14, 2023

Filed

vs. sector median

+4 wks slower

This filing is one of 6 filings about the same incident.View merged incident

Linked disclosures

Why this link?

Regulatory filings (5) · sorted by filing gap

Massachusetts State AGbd_16a721f3980fd9502023-09-14Verified
New Hampshire State AGbd_36da1fe1362248262023-09-14Verified
Montana State AGbd_3fb0edde155368132023-09-14Candidate
Indiana State AGbd_9798f80942aa90de2023-09-14Verified

Show 1 more filing ↓

Maine State AGbd_c8317ee81c4eba6b2023-09-14Verified

Name: The Mather Group LLC
norm: the mather

Name: The Mather Group LLC
norm: the mather
Industry: Financial Servicesllm

Discovered: Jun 21, 2023
Materiality determined: —
Notification sent: Sep 14, 2023
Affected individuals: Not disclosed
Data types: Identity (basic)Financial account
Attack vector: Ransomware
MITRE ATT&CK: T1486 Data Encrypted for ImpactT1041 Exfiltration Over C2 Channel
Threat actor: ExternalFinancial
Regulator citations: Notified the Federal Bureau of Investigation

During the incident: Engaged leading, independent cybersecurity experts to investigate
Notified the Federal Bureau of Investigation of this incident
Offering 24 months of complimentary credit and identity monitoring services through IDX
Changes made: Implemented enhanced technical security measures to minimize the chance that an incident like this could occur in the future
Taken specific actions to ensure client data remains out of the public domain
Source: Quoted from the filing itself, not independently verified.

Time to disclose: 12 weeks(85 days from discovery to filing)
Compliance flags: VT AG >45 bday
Discovery-date grounding: unattributedNo provenance was recorded for this discovery date and it matches no other date on the record. It may be correct, but it is not independently grounded.

Status: No extraction artifact recorded for this disclosure.

Filing propagation · 6 filings · 6 states

View merged incident ↗

Massachusetts State AGSep 14 · first

New Hampshire State AGSep 14 · first

Montana State AGSep 14 · first

Indiana State AGSep 14 · first

Maine State AGSep 14 · first

Vermont State AGSep 14 · first · this page

Evidence ladder

Leak-site claim

Attacker assertion only. Establishes: claim date, group, alleged victim.

Press / market report

Unlocks: incident narrative, operational impact. Still no compliance clock.

State AG / regulator filingThis record

Unlocks: discovery date, data types, affected count, compliance clock.

SEC 8-K / victim statement

Unlocks: materiality, stated response, full audit trail. Ceiling removed.

Source URL: https://ago.vermont.gov/document/2023-09-14-mather-group-data-breach-notice-consumers
DisclosureLens links to the originating regulator URL — full filing bodies are not redistributed from public surfaces (§4.5).
Filed at: Sep 14, 2023
Raw hash: 1c08ece8a3843c6cec81ab6303b3d5cbc1687364e5a43eae5767673787479bb5

Linked disclosures

Regulatory filings (5) · sorted by filing gap

Reporting entityThe Mather Group LLC

Victim entityThe Mather Group LLC

Incidentdiscovered Jun 21, 2023

Stated responseEngaged leading, independent cybersecurity experts to investigate

ComplianceVT AG >45 bday

Extraction provenanceno artifact recorded

Source provenanceago.vermont.gov